Comments by "G L" (@gelinrefira) on "EUV Lithography. But With a Free Electron Laser" video.

  1. Haha no one is going to give China's efforts a fair shake in YT channels like this. But I am glad that a lot of people are calling out for China's FEL efforts and they are probably at the leading edge for this application. Shows that the western propaganda about China is not as tight as they will like it to be.
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  2.  @msimon6808  The laser systems for FEL like SSMB are huge. They are size of a warehouse. They are not exactly portable so making transporting them as a single unit impossible, unless you break up the parts and ship them in smaller containers, then reassemble them at the customer's site. That will make it very complicated and risky and expensive because reassembly takes a lot of time and you have to make sure it works on site. You are basically building the laser on the customer's site and anything can go wrong. This is not conducive for an export oriented product. Tsinghua is going for this approach because they are not expecting to export this technology outside China as a product, unlike ASML. Once it is shown that it can work, most likely companies like SMEE will take on the job to build it and fabs like SMIC will just have them built on site in their foundries.
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  3.  @stormsj  That's the thing that westerners are chronically ignorant or deliberately refused to understand on how China looks at the Taiwan issue. I think it's deliberate because they are terminally unable to accept that China is doing great and is innovative, creative, dynamic and powerful. So of course they are going to control information flow. If those Americans who like to denigrate, insult and look down on China will to visit Shenzhen one day, they will either be shell-shocked, or gibbering in terror. "The white man is not on the top anymore!!!" Th thing is China doesn't NEED Taiwan to keep growing and progressing. What Taiwan represent is a wound that have not been healed. It's a political issue, not an economic one. But the Chinese are in no hurry to reunify with Taiwan and they ultimately don't even need TSMC. All China really wants is peaceful reunification and they can wait 10, 20, 50, even a 100 years to do that. But everyone and their dogs in the west talk like China can never have advanced chip technology without Taiwan or the west. Taiwan is a small little province. If you really know China, then Taiwan really is more like a 2nd rate, chronically mismanaged provincial backwater. All US sanctions do is solidify China's conviction and determine, and accelerate their progress because they can centrally planned to focused on project deemed as strategically important. Now you just force China to push their best and brightest to come up with innovative solutions to solve intractable problems. And everyone who bet against China from succeeding on their national project always lose.
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  4.  @MrSpiritmonger  The fact that you say that show you know next to nothing about this tech.
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  5.  @MrSpiritmonger  It's way more complex than shipping a self contained machine.
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  6. Collimating, focusing, redirecting. Lots of reasons why the laser has to bounce off many mirrors. The engineers know full well that every reflection is energy loss, so there must be a good reason why they have to add a mirror in the path of the laser.
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  7. Because you can make all kinds of interesting particles using a particle accelerator. Photons are just another particle in particle physics, so why not.
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  8. Tsinghua is probably going to build one soon.
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